Answer: Casey bought 4 1/2 pounds of apples
The equation is 0.88x - $1.50 = 2.46
x is the unknown number of pounds of apples.
0.88 is the cost per pound, 0.88x is the total cost of the apples before the discount .The discount is $1.50 $2.46 is the cost after the discount.
Part b Step-by-step explanation:
0.88x - $1.50 = 2.46 . Add $1.50 to both sides
0.88x - $1.50 + $1.50 = 2.46 + 1.50
On left, 1.50-1.50=0 so "cancels' on the right, add $2.46 + 1.50 = 3.96
0.88x = 3.96 is the cost before discount . Divide both sides by .88
.88x/.88 = 3.96/.88 . .88/.88 = 1 so 1 'cancels' leaving x. 3.96/.88 = 4.5
x = 4.5
part c
4.5 is 4 1/2, the (previously unknown) number of pounds of apples.
Casey bought 4 1/2 pounds of apples.
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Subtract sides 2
Divide sides by 9
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Add sides 9m
Subtract sides 28
Divide sides by 9
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Answer:
f(4) = -42
Step-by-step explanation:
f(x) = -10x - 2
f(4) 0r x = 4
Plug In 4 for X then solve
f(4) = -10 x 4 -2
f(4) = -40 -2
f(4) = -42
Answer:
8
Step-by-step explanation:
1. Combine like terms -18+26
2. Solve