Evaluate each expression using the given values. Show your solution. (2 points each)
1. 10a + 12b + 13 where a = 2 and b = 2
2. 7x + 8y – 6 where x = 3 and y = 3
3. 15a – 20b where a = 4 and b = 5
4. 25x + 30y + y where x = 10 and y = 9
5. 9a + 50b where a = 11 and b = 10


Sagot :

Evaluate each expression using the given values. Show your solution. (2 points each)

=================================================

1. 10a + 12b + 13 where a = 2 and b = 2

[tex] \bold{10a + 12 b + 13, \: a = 2 \: \: and \: \: b = 2} \\ \\ = \tt10(2) + 12(2) + 13 \\ = \tt20 + 24 + 13 \\ = \underline{ \boxed{ \orange{ \: \tt57 \: }}}[/tex]

=================================================

2. 7x + 8y – 6 where x = 3 and y = 3

[tex] \bold{7x + 8y - 6, \: x = 3 \: \: an \: \: y = 3} \\ \\ \tt = 7(3) + 8(3) - 6 \\ \tt = 21 + 24 - 6 \\ = \tt45 - 6 \\ = \underline{ \boxed{ \orange{ \tt \: 39 \: }}}[/tex]

=================================================

3. 15a – 20b where a = 4 and b = 5

[tex] \bold{15a - 20b, \: a = 4 \: \: and \: \: b = 5 } \\ \\ \tt = 15(4) - 20(5) \\ = \tt60 - 100 \\ = \underline{ \boxed{ \orange{ \tt \: - 40\: }}}[/tex]

=================================================

4. 25x + 30y + y where x = 10 and y = 9

[tex] \bold{25x + 30y + y, \: x = 10 \: \: and \: \: y = 9} \\ \\ \tt = 20(10) + 30(9) + 9 \\ = \tt200 + 270 + 9 \\ = \underline{ \boxed{ \orange{ \tt\: 479 \: }}}[/tex]

=================================================

5. 9a + 50b where a = 11 and b = 10

[tex] \bold{9a + 50b, \: a = 11 \: \: and \: \: b = 10} \\ \\ \tt = 9(11) + 50(10) \\ \tt = 99 + 500 \\ = \underline{ \boxed{ \orange{ \tt \: 599 \: }}}[/tex]

=================================================