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bagirrra123 [75]
3 years ago
13

Casey wants to determine whether the rate at which melted glass cools affects the strength of the glass. He pours melted glass i

nto a form and cools the glass at different rates. Then, he tests the breaking strength of each form. Which of the following is the test variable in this experiment?
A. type of glass
B. strength of the glass
C. thickness of the glass
D. cooling rate of glass

Help if you know and are sure!
Mathematics
1 answer:
Ivenika [448]3 years ago
5 0
Answer is B
test variable is what you measure
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tia_tia [17]

Answer:

(a) Growth

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Step-by-step explanation:

Given

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r = 24\% --- rate

Solving (a): Growth or decay

The question says his followers increases each day by 24%.

Increment means growth.

<em />

<em>Hence, it is a growth problem</em>

Solving (b): Equation to represent the scenario.

Since the rate represents growth, the equation is:

y = a(1 + r)^x

Substitute: a= 146 and r = 24\%

y = 146 * (1 + 24\%)^x

y = 146 * (1 + 0.24)^x

y = 146 * (1.24)^x

y = 146(1.24)^x

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Explanation:

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We can observe from the graph that the values of y lie between -1 to 1.

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Final Answer:

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