How do we get 45 in this????

A. 45h = 1,575

Step-by-step explanation:

Area of trapezoid = 1,575 cm² (given)

We are given the length of both bases, a = 63 cm and b = 27 cm

We need to find the formula that will enable us determine its height (h).

Thus:

Area of trapezoid = ½(a + b)h

Plug in the values

½(63 + 27)h = 1,575

½(90)h = 1,575

45h = 1,575

The answer is A. 45h = 1,575

7500

Step-by-step explanation:

Initial price =$5

increase in price = $6

Sales at $5 = 8000

Sales at $6 = 5000

slope = (8000-5000)/(5-6)

= 3000/-1= -3000

Using point slope formula:

y-y1=m(x-x1), m slope

and (x1,y1) a point

y-8000=-3000(x-3)

y-8000=-3000x+9000

y=-3000x + 1 7000

when x=$3.50 ( daily sales of noodles).

y=-10500+18000 = 7,500

7500 noodles are estimated to be sold