How do you work out perimeter of a trapezium

How do you solve y=-4 (-1) is for functions I don't understand how to solve it.

Mr zucco baked a total of 270 cupcakes and muffins. After ue sold 1/3 of the cupcakes and baked 18 more miffins, he had twice as many cupcakes as muffins. How many cupcakes and muffins did mr. Zucco bake to begin with?

Of 1414 possible books, you plan to take 55 with you on vacation. how many different collections of 55 books can you take?

A cone has a diameter of 6 cm and a height of 11.5 cm. Find the volume. Round your answer to the nearest 10th if necessary. Use 3.14 for pie.

Find the 110th term of the sequence - 7,3,13,23

One-third of 2c subtracted from five times nine

What is the missing value of - 5 = - 10 + ?

John Worker had $31,000 in taxable income. What was his tax? 3,986.00 4,264.25 4,650.00 7,750.00

A man buys a goat for $60 than he sells it for $70 he buys the same goat for $80 than sells it for $90 how much money does the man have?

What is 3,897.003 in word form