For each of the functions below, indicate whether the function is onto, one-to-one, neither orboth. If the function is not onto or not one-to-one, give an example showing why.

(a)f1:Z→Z. f1(x) =x33
(b)f2:Z→Z. f2(x) =bx3c+ 23
(c)f3:Z×Z→Z×Z. f3(x, y) = (x+ 1,2y)3
(d)f4:Z+×Z+→Z+.f4(x, y) = 2x+y−1

is one to one mapping, it is not onto mapping

Step-by-step explanation:

f₁(x) is one to one mapping

Let

f₁(x) = f₁(y):

x₁³ = y₁³

f₁(x) is not onto mapping

Example: If f₁(x) = 7,

x₁³ = 7

x₁ is not an element of Z

is one to one mapping, it is not onto mapping

26

step-by-step explanation:

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

.