Which is an exponential decay function? f(x) = 0.2(5/3) x f(x) = –3.1x f(x) = 10x f(x) = −2(0.7)x

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Shirley spelled 12 of her 15 spelling words correctly on the test. what percentage did shirley get on the test?

Q1 how many whole numbers less than 1000 can be written as a product of 3 consecutive whole numbers? a)10 b)11 c)15 d)21 q2 how many whole numbers between 5000 and 6000 consist of four different digits that decrease from left to right? a)3 b)10 c)69 d)120