Step-by-step explanation:
15a)
Subtract both sides by 21
15b)
7 and -3 multiply to -21 and add to 4
The factors are (x+7)(x-3)
15c)
x+7 =0
x=-7
x-3=0
x=3
factors of 18: 1,2,3,6,9
factors of 30: 1,2,3,5,6, 10, etc.
The greatest number of book for each shelf is 6.
18/6=3 shelves
30/6 =5 shelves
5+3= 8 shelves
There will be 8 shelves for each book.
The first equation uses the first and second coupons. the coupon (1-y)40 will take y% off of the dress pants so the answer is 40(1-y)
Answer:
4 times with a remainder 3
Step-by-step explanation:
7 * 4 = 28
28+3=31
Well, a y-intercept is a the point on a graph where the x value equals 0, because the point sits exactly on the y-axis. In this case, the y-intercept would be (0, -9).
