Evaluate the following algebraic expressions:
1. 2x - 3 when x = 1.5
2. 10x +7 - 2 when x=5
Hint:
A number in front of a variable means to multiply
Follow PEMDAS

1. 0

2. 55

Step-by-step explanation:

For expression one:

For expression two:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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step-by-step explanation: