Given (1, 21) and (2, 147) Tom was asked to create an exponential equation that models the situation. Tom thinks that the equation should be f\left(x\right)=21\left(7\right)^xf (x)=21(7) x
. Given Tom’s solution do you agree with him? Explain your reasoning.

How many zeros does the function f(x)=4x3-x2+1 have

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?