8% as a decimal and fraction would be 0.8 and 
8. 4x²+3y = 4(4)²+3(5) = 4(16)+15 = 64+15 = 79
basically you have to substitute the variable for the given value. (ex. x is replaced by 4 and y is replaced by 5 and z is replaced by 3) FOR BOTH PROBLEMS!
9. (y+z)/x = (5+3)/4 = 8/4 = 2
Worry man don’t understand maybe someone else can help
Answer:
14
Step-by-step explanation:
200 / 10 = 20
20 miles a gallon
280 / 20 = 14
:)
Answer:
25% of 12 is 3
Step-by-step explanation:
Think of percents like fractions. 25% is 1/4 in fraction form. Then multiply 1/4 to 12, which is the same is as 12 divided by 4. And your answer is 3
