Question 1 Select Cone in the list of shapes. Vary the angle between the intersecting plane and the vertical axis, and identify the shapes of
the cross sections formed. Try to form as many different cross-sectional shapes as possible. You might find it helpful to start
with a horizontal intersecting plane and gradually increase the angle of the plane until it is vertical. Be sure to observe the effect
of moving the plane without rotating it.

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step-by-step explanation:

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

eve and marks ratios are equivalent

step-by-step explanation:

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).