Question 1 point Stella earns $6.25 per hour working after school. She needs at least $143.75 for a new phone. How many
hours h does he need to work to reach her goal?

6.25h ≥ 143.75; h ≥ 23; 23 hours

Step-by-step explanation:

Levi earns $6.25 per hour after school. Since he needs at least $143.75 to get a stereo the amount he wants should be equal to or greater than  $143.75.

Let h = number of hours worked

The expression can be written as follows:

6.25 × h ≥  143.75

6.25 h ≥  143.75

divide both sides by 6.25

h ≥ 143.75/6.25

h ≥ 23 hours

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

ok

step-by-step explanation: