1. Karen has a coupon for 40% off of one item. She decided to use it for a pair of boots that cost $31. How much will she end up paying (before tax)? 2.A store that sells skis buys them from a manufacturer at a whole sale price for $57. The store's markup rate is 50%. What price does the store charge its customers for the skis?

leave karen no one wants you here :/ also the answer is 21

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204