Answer:
49
Step-by-step explanation:
28-21=7
7 to the power of two is the same as 7(7)
7(7)=49
3/5 equals 0.6, or 60%, 60% + 20% is 80%, so this means 20% is $40. So 40 * 5 is 200. He had $200 originally.
Answer:
x = 2
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
Step 2: Subtract 8x from both sides.
Step 3: Add 4 to both sides.
Step 4: Divide both sides by 4.