U+ xy, for u = 18, x = 10, and y = 8

98

Step-by-step explanation:

Substitute the given values into the expression

u + xy

= 18 + (10 × 8 ) ← multiply before adding

= 18 + 80

= 98

5x+2x=49

7x=49

x=7. 35 apples

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.