Question

Evaluate the expression bc + square 4a when a = 4, b =-2 and c = 9.

Answer 1

Which statement is true about the data in a stem-and-leaf plot?
A. All the data items shown are whole numbers.
B. No two data items can be the same.
C. Data items must be less than 100.
D. There are as many data items show as there are numbers to the right of the dividing line.

Answer 2

First, substitute the values of a, b, and c into the expression:
bc + square 4a = (-2)(9) + (4)^2
= -18 + 16
= -2

Therefore, bc + square 4a = -2 when a = 4, b = -2, and c = 9.

Answer 3

A. All the data items shown are whole numbers.

In a stem-and-leaf plot, the data items are typically whole numbers, as they are represented in the form of stem and leaf pairs where the stems represent the tens place and the leaves represent the units place.