Example 1
evaluate the expression (5 + 7) + 2x3- (8 + 1).
(5 + 7) + 2 x 3 – (8 + 1) = 12 - 2x3- (8 + 1) add inside the left parentheses.
= 12 - 2 x 3-9 add inside the remaining parentheses
= 6 x 3 - 9
divide.
= 18 - 9
multiply
subtract.

What is the total surface area of this square pyramid?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.