Mr. frankel bought 9 tickets to a puppet show and spent $70. he bought a combination of child tickets for $5 each and adult tickets for $10 each. write a system of equations that can be used to determine the number of adult tickets, a, and the number of child tickets, c, he bought.

solve by elimination

Step-by-step explanation:

let $5 tickets is X

so.. $10 = 9-x

now

5x + 10(9-x) = 70

so...

5x = 20

X = 4

hence

$5::: 4

$10::: 5

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!