Multiply $530.40 by 3/4. You get the equation

If you simplify this, you get the solution of $397.80
$397.80
To write an equation you need a slop and y intercept. To find the slop use the formula y2-y1 /x2-x1. and for the y intercept use the formula y=mx+b
Answer:
B) 1/2
Step-by-step explanation:
If the ratio is 90:3 and there are 4 groups of 3 in 12, then the ratio would then be 450:12, leaving you with 450 as the answer. Hope I helped
Step-by-step explanation:
3890 - 3200
=690
(690÷3200) x 100%
=21.56%