HP Store Online - Can you help me with math?

Can you help me with math?

Solve the problem for the unknown values. Mary Vachon had top soil delivered to her house. The total cost included a delivery charge of $45 plus $60 per cubic foot of top soil. The total charge was $375, how many cubic yards of soil were delivered? a. 60 cubic yards b. 45 cubic yards c. 5 cubic yard d. 5.5 cubic yards Solve for the unknown value. The twon of Dover currently has a population of 6500 citizens. If its population is increasing at a rate of 1200 people per year, how long will it take for the population to reach 20,600? a. 11 years b. 11.50 years c. 11.75 years d. 12 years Hector Hanna will purchase on of two laser printers, a Hewlett-Packer or a Lexmark. The HP costs $499 for the machine and $0.06 per page to print. The Lexmark costs $419 for the machine and $0.08 per page to print. After how many sheets will the printers cost the same amount of money? a. 2000 pages b. 4000 pages c. 6000 pages d. 100 pages

Public Comments

1.) d 2.) c 3.) b
Just set up simple equations. For example the first one would be 60x + 45 = 375 Now solve for x Same for the others. Make equations.
1. 45+60x=375 60x=330 x=5.5 cubic yards (d) 2. 6500+1200x=20600 1200x=14100 x=11.75 years (c) 3. 499+.06x = 419+.08x 80+.06x=.08x 80 = .02x 4000 pages =x (b)
1. $375-$45 divided by $60, answer is 5.5 cubic yards 2. 20,600-6500=14,100 divided by 1200, answer is 11.75 years 3. $0.06x4000+499=739; $0.08X4000+419=739 answer is 4000 pages