I need help with this

b= 47°

Step-by-step explanation:

the value of a straight line is 180°. so create an equation that sets the angle values to equal 180°, then solve for b:

(3b-6)+(b-2)=180

3b-6+b-2=180

4b-8=180

4b=188

b=47

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5