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(5 Neighbors) x (($1.00 Box) + (? Plant) + ($3.00 Gloves)) = 42.50
5 x (1 + x + 3) = 42.50
Combine in parens.
5 x (4 + x) = 42.50
Distribute.
20 + 5x = 42.50
Subtract 20 from both sides.
5x = 22.50
Divide both sides by 5.
x = 4.50
Thats the cost of each plant.
Check.
5 x (1 + 4.50 + 3)
5 x 8.50 = 42.50
You should first multiply and then sum up the A together and B together : 8 A + 16 B + 12 A + 6 B = 20 A + 22 B :D
Lisa invests $4,000 in two types of bonds, bond A and bond
B. Bond A offers a 10% return, and bond B offers a 6% return. Lisa invested in
each bond in x and y amounts. To solve the problem using two equation: x +y
=4000
0.10x +
0.06y = 340
Solving the equation lisa invested $2500 in 10% rate and
$1500 in 6% rate.