andy has already saved 15 he plans to save 28 per month which of the following equations represents the amount of money he will have saved
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ATI TEAS 7

ATI TEAS Math Practice Test

1. Andy has already saved $15. He plans to save $28 per month. Which of the following equations represents the amount of money he will have saved?

Correct answer: A

Rationale: The correct equation to represent the amount of money Andy will have saved is y = 15 + 28x. This is because Andy has already saved $15 and plans to save an additional $28 per month. Therefore, the total amount he will have saved can be calculated by adding the initial $15 to the monthly savings of $28 (28x), resulting in y = 15 + 28x. Choices B, C, and D do not correctly account for the initial $15 that Andy has saved and therefore do not represent the total amount correctly.

2. What is the primary function of the endocrine system?

Correct answer: C

Rationale: The correct answer is C: 'To regulate body functions through hormones.' The endocrine system is responsible for producing and secreting hormones that help regulate various body functions such as growth, metabolism, reproduction, and mood. It does not primarily function to fight infection (A), transport oxygen (B), or break down food (D). While the immune system fights infection, the respiratory system transports oxygen, and the digestive system breaks down food, the main role of the endocrine system is to maintain homeostasis by coordinating and controlling bodily functions through the release of hormones.

3. Which of the following uses commas in a series correctly?

Correct answer: A

Rationale: Option A is the correct answer as it uses commas to separate items in a series ('milk, bread, and eggs'). In option B, the comma after 'bacon' is unnecessary. Option C correctly uses commas to separate the items in the series ('homework, hockey practice, and chores'). Option D incorrectly omits commas between 'mom' and 'dad,' and 'dad' and 'sister,' making it incorrect for a series of three or more items.

4. What are the two layers of the spinal cord?

Correct answer: A

Rationale: The correct answer is A: White matter and grey matter. The spinal cord is composed of an exterior layer of white matter, which surrounds an interior core of grey matter. White matter consists mainly of myelinated axons, while grey matter contains cell bodies, dendrites, and unmyelinated axons. White matter is responsible for transmitting nerve signals up and down the spinal cord, while grey matter processes sensory information and initiates motor commands. The other choices (B, C, D) are incorrect as they do not represent the anatomical layers of the spinal cord. Epithelial and connective tissue, adipose and muscular tissue, dermis, and hypodermis are not the layers of the spinal cord but are found in other parts of the body such as skin and organs.

5. Muscle tissue is responsible for movement. Which type of muscle tissue is found in the heart?

Correct answer: C

Rationale: Cardiac muscle is the type of muscle tissue found in the heart. Unlike skeletal muscle and smooth muscle, cardiac muscle is striated and involuntary, meaning it contracts without conscious control. It forms the majority of the heart's structure and is essential for its rhythmic contraction to pump blood throughout the body. Skeletal muscle is attached to bones and responsible for voluntary movements, while smooth muscle is found in organs and blood vessels, controlling various involuntary functions like digestion and blood flow. Therefore, choices A (Skeletal muscle) and B (Smooth muscle) are incorrect as they are not the types of muscle tissue found in the heart.

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