Answer:
1) 9x-4
Step-by-step explanation:
7x+2x= 9x
-8+4= -4
9x-4
Answer:
$22.5
Step-by-step explanation:
2.5% = .025
900 divided by 1.5 = 600
600 multiplied by .025 = 15
15 divided by .5 = 7.5
15 + 7.5 = 22.5
Answer:
40
Step-by-step explanation:
6% of number = 6/100 × x = 6x/100 = 3x/50
Sum of the number and 6% of itself = 42.4
x + (3x/50) = 42.4
(50x+3x)/50 = 42.4
53x = 42.4 × 50
53x = 2120
x = 2120/53
x = 40
