The heaviest backpack juan can carry safely weighs 15 pounds. his notebook weighs 4 pounds. if his books average 3.5 pounds, how many books can he carry? l

If he can only weigh 15 pounds and he already has 4 you have to add 3.5 plus 3.5 that makes 7 plus 4 is 11 you can add one more so then you would have 14.5 and that would be enough

Step-by-step explanation:

- 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

10 - 75

step-by-step explanation:

there's nothing attached so it's most likely anything in that range.