Sometimes, more than one expression can describe the same situation. Suppose you have a pocketful of change. You have some pennies (p) and some quarters (q). One expression could be used to describe the total number of coins in your pocket:

p + q.

A second expression could be used to describe the amount of money (in dollars) in your pocket:

0.01p + 0.25q.

Notice that each expression describes a different characteristic of the change in your pocket.

Evaluate each expression for the situation where you have 6 quarters and 7 pennies in your pocket.

Type the correct answer in each box. Use numerals instead of words. For the amount of money, do not enter a dollar symbol.

The number of coins is p + q =
.

The amount of money is 0.01p + 0.25q =
.

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

y= 2x+7

changed to y= 5x +7

as slope is increased from 2 to 5

therefore it would be less steeper

so, option d) is correct

the above table 1 will calculate the population size (n) after a certain length of time (t). all you need to do is plug in the initial population number (no), the growth rate (r) and the length of time (t). the constant (e) is already entered into the equation. it stands for the base of the natural logarithms (approximately 2.71828). growth rate (r) and time (t) must be expressed in the same unit of time, such as years, days, hours or minutes. for humans, population growth rate is based on one year. if a population of people grew from 1000 to 1040 in one year, then the percent increase or annual growth rate is 40/1000 x 100 = 4 percent.

step-by-step explanation: