Students in a dance class filled out a survey. there were 25 girls and some boys who
participated in the survey. the results showed that 20% of the students prefer tap dance to
ballroom dance. there are 9 students who prefer tap dance. which equation can be used to
find the number of boys ( x) who participated in the survey?
a. 0.2 x + 25 = 9
b. 0.2( x + 25) = 9
c. 0.2(25 – 9) = x
d. 25 + x = 0.2 × 9

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

How do you convert 1.27 to a percentage