Please help !! You deposit $400 in a savings account that earns 7% interest compounded annually. What is the function that represents your balance after 7 years?

$62.03
$86.20
$53.59
$59.95
$296.41

Which graph represents the following piecewise defined function?

Which statements about these triangles is true

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.