Which of the following is a true statement? a. doubling the radius of a sphere increased its surface area 4 times b. doubling the radius of a sphere increases its volume 6 times c. doubling the radius of a right circular while the height remains constant increases its surface area 4 times d. doubling the radius of a right circular cylinder while the height remains constant increases its volume 8 times

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step-by-step explanation:

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step-by-step explanation:

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

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