Answer:
f(-1) = 121
Step-by-step explanation:
f(x) = (5-6x)^2 (First we will substitute x for -1)
f(-1) = (5-6(-1))^2 (Then we will combine like terms)
f(-1) = (11)^2 (Then we will square it)
f(-1) = 121 (You are done)
He used 7 pints all together because there at 2 cups in each pint and 4 pints in a half a gallon.
9. Multiply the money he has by the portion he spent:
75 x 3/5 = (75 x3)/5 = 225/5 = 45
He spent $45
10. First rewrite 4 1/8 as an improper fraction
33/8
Now multiply by 1/3:
33/8 x 1/3 = (33 x1) /(8 x 3) = 33/24 = 1 3/8
She spent 1 3/8 hours studying math.
X+y=3
x-y=21
x=3-y
3-y-y=21
-2y+3=21
-2y=18
y=-9
x = 3-(-9) = 12
Two numbers are 12 and -9.
Hope this helps.
