我想問關於英文數學問題

我想問關於英文數學問題
1:A car is travelling at a speed of v m/s
(a)what is the distancetravelled by the car in t seconds?
(b)Find the distance travelled by the car at a speed of 210m/s in
one and a half minutes ?

2: 5(a-1)/2-4(a+1)/3

3: The area of a parallelogram is equal to the area of a triangle.The
height of the triangle is 5 cm.lf the two figures have the same
base,find the height of the parallelogram.Let the height of the
parallelogram be h cm and their base be b cm.