Coefficientis the number in front of the letter. For example, coeffient of 2b is 2. When there is no number in front of the letter the coefficient is 1.
To find the area of a trapozoid ((b1+b2)/2)xh 1. 48 2. 784 3. 11.4 4. 31.5 5. 336 6. 150 7. 6 8. 56 9. 2.5 i just put the answers but if you want to check my work then use the formula that i put at the beginning.
