A pen costs $t. A pencil costs half as much as a pen. A marker cost $7 more than a pencil. A) what is the cost of the marker in terms of t? B)If the pen costs $10, what is the cost of the marker?

Hi im help with one question and im stuck on it (there is a boy who bought 3 shirts and 1 hat and there is a girl who bought 1 shirt and 2 hats the girl jade to cost 80 pound and the boy hade to pay 120 pound how much 1 shirt costs

Here are 6 number cards -4, -2,-1,5,6,8. Arrange the number cards into three pairs with the same total.

Michael randomly selected 30% of the 7th grade students at school to found out their favorite season. What is a reasonable prediction of the number of 200 7th graders who would choose summer as their favorite season?