Atriangle has a base of 4 units and a height of 3 units. mark draws the triangle again but doubles the height. how does the area of the triangle change?

It doubles the area.

Step-by-step explanation:

The formula for the area of a triangle is a = bh/2. So, if we plug in the first triangle, you get a = 6. With the second triangle, the height is being doubled. We can represent this with the equation:

4 × 3 × 2/2

Both 2s cancel each other out, leaving us with a = 12. 12/6 is 2. Therefore, doubling the height will ALWAYS double the area.

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).