“at a restaurant the cost for a breakfast taco and a small glass of milk is $2.10. the cost for 2 tacos and 3 small glasses of milk is $5.15. which pair of equations can be used to determine t, the cost of the taco, and m, the cost of a small glass of milk? ”

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

Tom drove 206 miles in 3.9 hours. estimate his average speed.

Johnny rode his bike to a friends house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was unable to play. what was his displacement for the total bike ride trip? what could you use as a reference point ? show the steps to solve this problem.