Bonnie withdrews 1,200 for her savings account she spends 1/5 of the money on travel arrangements she spends 2/3 of the remaining money at a hardware store she treats her friends to lunch with some of the remaining money after lunch bonnie has $350 left how much money did they spend on lunch

1200-240= 960

960- 640 = 320

320-300.5 = She spent $19.5 on lunch

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15