An office supply store in san diego sells 7 writing tablets and 4 pens for $6.40. also, 2 tablets and 19 pens cost $5.40. find the price of each. someone answer soon my test is tomorrow.

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

Travis and paula went to lunch.travis ordered a sandwich for $7.50 and paula ordered a burger for $5.25.after lunch,they left a 15% tip for the waiter.how many money did they spend altogether?

Isabelle is mixing red and blue paint to make purple paint she adds 3/10 of a fluid ounce of red to 12/25 of a fluid ounce of blue to make 1 1/30 fluid ounces of purple how many fluid ounces of red paint ounces of red paint will she need to make 3 fluid ounces of purple paint