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Read the following description of a relationship: $\newline$ Bella is a dentist and has $15$ appointments every day. $\newline$ Let $d$ represent the number of days and $a$ represent the total number of appointments. $\newline$ $\newline$ Find the value of $a$ when $d = 1$ . $\newline$ $a = \_\_\_$

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Solve word problems by finding two-variable equations

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Q. Read the following description of a relationship:

\newline

Bella is a dentist and has

15

appointments every day.

\newline

Let

d

represent the number of days and

a

represent the total number of appointments.

\newline

\newline

Find the value of

a

when

d = 1

.

\newline

a = \_\_\_

Write Equation Using $15$ : Bella has $15$ appointments each day. Write an equation using $15$ , $a$ , and $d$ . $\newline$ The total number of appointments ( $a$ ) is $15$ times the number of days ( $d$ ). $\newline$ $a = 15 \times d$ $\newline$ $a = 15d$
Substitute Value for d: We know that $d = 1$ . $\newline$ Plug in the value for $d$ in $a = 15d$ . $\newline$ $a = 15d$ $\newline$ Substitute $d$ with $1$ . $\newline$ $a = 15 \times 1$
Solve for a: $a = 15 \times 1$ $\newline$ Solve for a. $\newline$ $a = 15$

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\newline

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