Nalini thinks of an number, she doubles it and adds 5. Her answer was sixteen more than the number she thought of. What number Nalini think of? a) 10 b) 11 c) 12 d) 6

b) 11

Step-by-step explanation:

Let the number Nalini thinks of be x.

Doubles number and adds 5 = sixteen more than the number

2x + 5 = x + 16

Shift the (+5) to the other side and change to (-5).

Shift the (x) to the other side and change to (-x).

2x - x = 16 - 5

Evaluate like terms.

x = 11

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.

nswer: a   y-axis

step-by-step explanation: